> For the complete documentation index, see [llms.txt](https://xreal.gitbook.io/nrsdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xreal.gitbook.io/nrsdk/nrsdk-fundamentals/xreal-devices/readme.md).

# XREAL Glasses

XREAL’s products include the XREAL Light Developer Kit, XREAL Light Consumer Kit, and the Xreal Air series. See below for a brief overview of each headset, its features, and attributes relevant to developers.

* **XREAL Light**: The consumer version of XREAL Light, which is currently selling through XREAL's partnered carriers’ retail stores. XREAL Light operates by tethering to an Android smartphone.
* **XREAL Air**: Compared to XREAL Light, XREAL Air is a pared down, yet highly fashionable pair of AR glasses, that pushes the envelope with a form factor that’s wearable and inherently more comfortable.
* **XREAL Light Developer Kit**: The XREAL Light Developer Kit operates by tethering Xreal Light to a proprietary computing pack developed by Xreal.
* **XREAL Air 2 and XREAL Air 2 Pro**: XREAL Air 2 shares the same technological features as XREAL Air, but focuses much more on ergonomics, making it way more comfortable to wear for general consumers. XREAL Air 2 Pro, in addtion to what XREAL Air 2 has to offer, introduces the world's first electrochromic lens ever put into mass production.

The table below shows detailed technical specifications for XREAL AR glasses:

<table><thead><tr><th width="200">Feature</th><th>Light</th><th>Air</th><th>Air 2</th><th>Air 2 Pro</th><th>Air 2 Ultra</th></tr></thead><tbody><tr><td>Size(folded)</td><td>156mm * 52mm * 44mm</td><td>151mm * 41mm * 51mm</td><td>148mm * 51mm *56mm</td><td>148mm * 51mm * 57mm</td><td>148.5mm *48mm *60mm</td></tr><tr><td>Weight (Excluding cable)</td><td>106g</td><td>~77g</td><td>~72g</td><td>~75g</td><td>~80g</td></tr><tr><td>Resolution Per Eye</td><td>1920 * 1080</td><td>1920 * 1080</td><td>1920 * 1080</td><td>1920 * 1080</td><td>1920 * 1080</td></tr><tr><td>FOV</td><td>52 Degrees</td><td>46 Degrees</td><td>46 Degrees</td><td>46 Degrees</td><td>52 Degrees</td></tr><tr><td>Frame Rate - MR Space</td><td>60Hz</td><td>60Hz; 72Hz </td><td>60Hz; 72Hz; 90Hz; 120Hz</td><td>60Hz; 72Hz; 90Hz; 120Hz</td><td>60Hz;<br>72Hz; 90Hz; 120Hz</td></tr><tr><td>Supporting System</td><td>Android</td><td>Android</td><td>Android</td><td>Android</td><td>Android</td></tr><tr><td>RGB Camera</td><td>Yes</td><td>No</td><td>No</td><td>No</td><td>No</td></tr><tr><td>Grayscale Camera</td><td>Yes</td><td>No</td><td>No</td><td>No</td><td>Yes</td></tr><tr><td>IMU</td><td>Yes</td><td>Yes</td><td>Yes</td><td>Yes</td><td>Yes</td></tr><tr><td>Connection</td><td>USB-C Cable</td><td>USB-C Cable</td><td>USB-C Cable</td><td>USB-C Cable</td><td>USB-C Cable</td></tr><tr><td>Audio</td><td>Dual Speakers and Microphones</td><td>Dual Speakers and Microphones</td><td>Dual Speakers and Microphones</td><td>Dual Speakers and Microphones</td><td>Dual Speakers and Microphones</td></tr></tbody></table>

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